Equipment unit · VIN-decoded · NHTSA vPIC

2025 Mack Pinnacle

1M1PN4GYXSM016804 · Truck-Tractor · TRUCK
Carriers run under3
14 mo
Inspections4
all-time
OOS inspections0
of 4
First seenJan 16, 2025
TX
Last seenMar 10, 2026
TX
Inspected under 3 different carriers in 14 months
A unit that bounces between many operators can indicate slip-seating, heavy sub-haul, or double-brokering. Review the carrier timeline below for load integrity — context for human judgment, not a verdict.
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1M1PN4GYXSM016804
Make
Mack
Model
Pinnacle
Model year
2025
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jul 5, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1M1

Deterministic · VIN positions 1–3.

Vehicle descriptor section
PN4GY

Deterministic · VIN positions 4–8.

Check digit
X · valid

Deterministic · position 9; calculated value X.

Model year candidates
1995 or 2025

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
016804

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
MACK

Prefix basis · 2,471 decoded VINs at 100.0% prefix purity.

Model
Pinnacle

Prefix basis · 2,471 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2025

Observed directly for this VIN via NHTSA vPIC.

Observed make
MACK

Observed directly for this VIN via NHTSA vPIC.

Observed model
Pinnacle

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jan 16, 2025 – Mar 10, 2026

DateStateLevelViol.OOSCarrier (DOT)Plate
Mar 10, 2026TXII · Walk-around0MODERN TRANSPORTATION SERVICES LLC 290790R713161/TX
Sep 25, 2025TXI · Full0GRAMMER LOGISTICS INC 184668R713161/TX
Feb 19, 2025ILII · Walk-around2BRIAN WAYNE BROOKHART 913567R713161/TX
Jan 16, 2025TXII · Walk-around1BRIAN WAYNE BROOKHART 913567R713161/TX
03

Carriers this unit has run under

3 distinct carriers · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
MODERN TRANSPORTATION SERVICES LLC290790Mar 10, 2026Mar 10, 20261PA
GRAMMER LOGISTICS INC184668Sep 25, 2025Sep 25, 20251IN
BRIAN WAYNE BROOKHART913567Jan 16, 2025Feb 19, 20252TX
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
R713161TXMODERN TRANSPORTATION SERVICES LLCMar 10, 2026Mar 10, 20261
R713161TX1GRAMMER LOGISTICS INCSep 25, 2025Sep 25, 20251
R713161TXBRIAN WAYNE BROOKHARTJan 16, 2025Feb 19, 20252
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026